Cycles render is different when rendering with GPU
I'm using a HDRI lighting in my scene which is not yet supported in OpenCL. Anyone knows when it will be supported?

Well i just had a look at the supported features page, and it says that HDR float isn't supported yet with opencl 

blender.org/manual/render/cycles/gpu_rendering.html 

"OpenCL: No support for HDR (float) textures at the moment.".